Can we set up recruiters to be able to see only part of submissions?

Summary: We would like our recruiters to be able to see only candidates from particular countries

Content (required): Can you think of any system set up where recruiters can see candidates, but only from particular country? Example: we have a requisition with Location A, but we receive applications from candidates based in countries A, B and C. Can we create some config where there are recruiters that can view and manage only candidates from one particular country? (regardless of requisition location). I think User groups don't help here, because they can restrict reqs visibility by country, but not candidates. I would appreciate any ideas for workarounds :)